thodgkinson
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- Joined
- Jun 26, 2019
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- 6
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- Age
- 30
I'll start the truck and all is fine, but once I put it into gear it'll start bucking and the RPM's will surge up and down. This has plagued me since I bought the truck new with almost no miles on it. It has happened 95% of the time on a cold start and has happened a couple to few times once the engine has been warm. It happens there-again about 95% of the time when shifted from P to R on a cold start and has only ever happened from P to D once or twice.
Now, the video I'm showing the truck only had 500 miles on it at that time when I was able to capture that video of it happening. I've tried since to get a better video but this is the best one I have to date and I'm almost to 8k miles now.
Here's a catch though to twist this even further. 16 seconds into the video you'll see me shift into D because I was seeing if that would help the truck figure out whatever was going on. You can't tell from the video outside of the RPM surging more wildly, but at this point the truck starting violently thrusting forward. If you listen in the video, you'll hear the AC blowing in the beginning because on that particular day it was hot outside. At 20 seconds you'll hear the AC shut completely off, the RPM's will slightly stabilize but still move a little. The motor fan upfront is still on from the sound of it. And then at about 45 seconds you'll hear the AC ramping back to full capacity. After the truck is warmed up the idle is smooth and these issues almost never exist. As previously mentioned however this has happened to me once warm though but it is extremely rare once warm.
This isn't on every start up but the ones it does it's extremely embarrassing. It never fails to be when someone is with me and waiting on me to back up to load something or when we are leaving wherever we might be. They either think I'm doing it acting like a jacka** or can tell something is wrong and ask "isn't this a brand new truck?" Which is a huge shot right to the gonads because who wants issues like this before a truck ever even breaks 1k miles.
Now, to go ahead and help this conversation. Yes, I have taken it to the dealership and YES believe it or now they were able to replicate this happening. The tech who did said there were no codes being shown and he couldn't begin to guess why this was happening. He only recommended that, because of how the AC seemed tied to it perhaps, I should try not having "Auto" selected for my AC and should instead select a low fan speed so when I'd start my truck the AC wouldn't tax it.
So I'm curious, are there others that have this same issue? Perhaps any TSB's? Even if not, has anyone witnessed anything like this before and have any suggestions? I've read around on the internet and found the usual vacuum leak, IAC, MAF, etc. Just curious if there's a fix so I can point the techs in the right direction before I go dump this thing off at the dealership until they figure it out taking who knows what length of time.
Here's the video since there seems to be no way to upload it here and it's by far the best way to see/hear/understand what's going on.
Now, the video I'm showing the truck only had 500 miles on it at that time when I was able to capture that video of it happening. I've tried since to get a better video but this is the best one I have to date and I'm almost to 8k miles now.
Here's a catch though to twist this even further. 16 seconds into the video you'll see me shift into D because I was seeing if that would help the truck figure out whatever was going on. You can't tell from the video outside of the RPM surging more wildly, but at this point the truck starting violently thrusting forward. If you listen in the video, you'll hear the AC blowing in the beginning because on that particular day it was hot outside. At 20 seconds you'll hear the AC shut completely off, the RPM's will slightly stabilize but still move a little. The motor fan upfront is still on from the sound of it. And then at about 45 seconds you'll hear the AC ramping back to full capacity. After the truck is warmed up the idle is smooth and these issues almost never exist. As previously mentioned however this has happened to me once warm though but it is extremely rare once warm.
This isn't on every start up but the ones it does it's extremely embarrassing. It never fails to be when someone is with me and waiting on me to back up to load something or when we are leaving wherever we might be. They either think I'm doing it acting like a jacka** or can tell something is wrong and ask "isn't this a brand new truck?" Which is a huge shot right to the gonads because who wants issues like this before a truck ever even breaks 1k miles.
Now, to go ahead and help this conversation. Yes, I have taken it to the dealership and YES believe it or now they were able to replicate this happening. The tech who did said there were no codes being shown and he couldn't begin to guess why this was happening. He only recommended that, because of how the AC seemed tied to it perhaps, I should try not having "Auto" selected for my AC and should instead select a low fan speed so when I'd start my truck the AC wouldn't tax it.
So I'm curious, are there others that have this same issue? Perhaps any TSB's? Even if not, has anyone witnessed anything like this before and have any suggestions? I've read around on the internet and found the usual vacuum leak, IAC, MAF, etc. Just curious if there's a fix so I can point the techs in the right direction before I go dump this thing off at the dealership until they figure it out taking who knows what length of time.
Here's the video since there seems to be no way to upload it here and it's by far the best way to see/hear/understand what's going on.
